UPS Uninterruptible Power Supplies

An uninterruptible power supply, commonly known as "UPS Power Supply" is a device that is designed to supply power to your computers, servers and data centres in case of main power failure, electrical surge or unexpected power cut off. These devices contain a battery that guarantees power to your computer system for a certain period of time, creating a time period long enough for saving the current task and shutting off the computer. For further reading, see our complete guide to uninterruptible power supplies (UPS).




UPS Uninterruptible Power Supply Types?


There are several types of UPS systems available on the market:


  • Online UPS - A system of supplying power by converting AC input (utility power) to DC and reconverting it to stable AC by the inverter while constantly charging the batteries. Supplies power without momentary power breaks in the event of a power outage.

  • Standby UPS - A system where, normally AC input (utility power) is output as is to connected devices and when a power outage or abnormal voltage is detected, inverter starts feeding using power from the batteries. In the event of a power outage, a few milliseconds of momentary break occurs in AC output.

  • Parallel processing UPS - While power from AC input (utility power) is supplied, the bidirectional inverter connected in parallel corrects voltage and absorbs noise. Because this is the online inverter (parallel) system, it has both high efficiency and high reliability.

  • Hybrid UPS - This system consists of three modes: double conversion mode, economy mode, and active filter mode. The UPS automatically selects the power feeding mode to best suit the power situation and load conditions. It is possible to shift between the respective modes with no momentary break in output voltage. Double conversion mode is selected when the power situation is poor and economy mode is selected when the power situation is good.


How to choose the right UPS device


A UPS power supply may vary in the backup time, size, numbers and type of communication ports. Some more expensive models are equipped with an intelligent system that automatically shut down connected devices to ensure that no data is lost and the device shutdown is safe. All of these aspects need to be considered before making the final decision on buying one model or another.


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Description Price Model Power Rating Input Voltage Output Voltage VA Rating Backup Time Mounting Type Communications Current Rating Number of Outlets Type Length Width Depth
RS Stock No. 779-3803
Mfr. Part No.BR1500GI
BrandAPC
$856.35
Each
units
Power-Saving Back-UPS Pro 865W 230V 230V 1500VA 4min Stand Alone DB9, RS232, USB - 12 Line Interactive 112mm 301mm 380mm
RS Stock No. 689-9073
Mfr. Part No.BK650EI
BrandAPC
$333.04
Each
units
Back-UPS CS 400W 180 → 266V 230V 650VA - Stand Alone RJ45, Serial Port, USB 7A 6 Offline 165mm 91mm 284mm
RS Stock No. 689-9070
Mfr. Part No.BK500EI
BrandAPC
$285.43
Each
units
Back-UPS CS 300W 180 → 266V 230V 500VA - Stand Alone RJ45, USB 7A 6 Offline 165mm 91mm 284mm
RS Stock No. 779-3784
Mfr. Part No.SMT1500RMI2U
BrandAPC
$1,757.95
Each
units
Smart-UPS LCD 1kW 230V 230V 1500VA 7min Rack Mount RJ45, Serial, Smart Slot, USB - 6 Line Interactive 432mm 89mm 457mm
RS Stock No. 779-3816
Mfr. Part No.BR900GI
BrandAPC
$523.32
Each
units
Power-Saving Back-UPS Pro 540W 230V 230V 900VA 5min Stand Alone DB9, RS232, USB 8A 10 Line Interactive 100mm 250mm 382mm
RS Stock No. 779-3807
Mfr. Part No.SC620I
BrandAPC
$570.88
Each
units
Smart-UPS SC 390W 230V 230V 620VA 5min Stand Alone DB9, RS232 - 4 Line Interactive 119mm 168mm 375mm
RS Stock No. 779-3771
Mfr. Part No.SMT3000RMI2U
BrandAPC
$3,627.68
Each
units
Smart-UPS LCD 2.7kW 230V 230V 3000VA 3min Rack Mount USB - 8 Line Interactive 480mm 86mm 683mm
RS Stock No. 779-3825
Mfr. Part No.BK350EI
BrandAPC
$237.84
Each
units
Back-UPS CS 210W 230V 230V 350VA 9min Stand Alone USB 7A 6 Standby 91mm 165mm 284mm
RS Stock No. 779-3759
Mfr. Part No.SUA5000RMI5U
BrandAPC
$6,270.48
Each
units
Smart-UPS 4kW 230V 230V 5000VA 9min Rack Mount DB9, RS232, Smart Slot - 14 Line Interactive 483mm 222mm 660mm
RS Stock No. 779-3819
Mfr. Part No.SC420I
BrandAPC
$380.57
Each
units
Smart-UPS SC 260W 230V 230V 420VA 5min Stand Alone DB9, RS232 - 6 Line Interactive 119mm 168mm 368mm
RS Stock No. 689-9092
Mfr. Part No.SC450RMI1U
BrandAPC
$547.11
Each
units
Smart-UPS SC 280W 160 → 286V 230V 450VA - Rack Mount, Stand Alone RJ11, RJ45, Serial Port - 6 Line Interactive 44mm 432mm 383mm
RS Stock No. 146-8165
Mfr. Part No.AR3150
BrandAPC
$4,600.84
Each
units
NetShelter - - - - - Rack Mount - - - - 750mm 1.07m 1.991m
RS Stock No. 146-8163
Mfr. Part No.AR100HD
BrandAPC
$1,576.30
Each
units
NetShelter - - - - - - - - - - 584mm 631mm 663mm
RS Stock No. 146-8167
Mfr. Part No.AR3104
BrandAPC
$3,179.81
Each
units
NetShelter - - - - - Rack Mount - - - - 600mm 1.07m 1.199m
RS Stock No. 146-8166
Mfr. Part No.AR8105BLK
BrandAPC
$225.18
Each
units
NetShelter - - - - - Screw Mount - - - - 483mm 406mm 89mm
RS Stock No. 146-8164
Mfr. Part No.AR2480
BrandAPC
$3,405.08
Each
units
NetShelter - - - - - - - - - - 800mm 1.06m 2.057m
RS Stock No. 146-8169
Mfr. Part No.SBP3000RMHW
BrandAPC
$613.46
Each
units
PQUA-8ASKY4 3000VA 230V 230V 3000VA - Rack Mount - 16A - UPS 432mm 76mm 89mm
RS Stock No. 146-8168
Mfr. Part No.SBP5000RMI2U
BrandAPC
$919.42
Each
units
PQUA-8ASKY4 7680VA 230V 230V 7680VA - Rack Mount - 32A - UPS 432mm 660mm 89mm